The document discusses a case study on the diffusion of screw-on wine caps in the United States compared to Australia and New Zealand. It analyzes why screw-on caps were more successfully adopted in Australia and New Zealand using the concept of "co-opetition", where wine producers cooperated with competitors. The summary evaluates screw-on caps using Rogers' model of innovation attributes and Ram and Sheth's barriers to adoption, finding issues with perceived relative advantage, risk, tradition, and image barriers in the US. It argues co-opetition between US wine producers could have overcome these barriers and led to greater adoption of screw-on caps.